Parasitic mode losses versus signal sensitivity in beam position monitors

Conference · Tue Oct 01 00:00:00 EDT 1985 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:5947694

Denard, J C; Bane, K L; Bijleveld, J; Hutton, A M; Pellegrin, J L; Rivkin, L; Wang, P; Weaver, J N

A beam position monitor (BPM) for a storage or damping ring may be subject to heating problems due to the parasitic mode (PM) losses, beam interception and synchrotron radiation interception. In addition, high PM losses can cause beam instabilities under some conditions. Recessing and/or masking the BPM may increase the PM losses in the process of solving the latter two problems. This paper presents three complementary methods for estimating the PM losses and for improving the design of a stripline directional coupler type of BPM: bench measurements, computer modeling (TBCI) and an equivalent circuit representation. These methods lead to a decrease in PM losses without significant reduction in output signal for the north SLC damping ring BPMs.

• Research Organization: Stanford Linear Accelerator Center, Stanford University, Stanford, CA
• OSTI ID: 5947694
• Report Number(s): CONF-850504-
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Vol. NS-32:5; Conference: Particle accelerator conference, Vancouver, Canada, 13 May 1985
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM MONITORS
LOSSES
SENSITIVITY
STORAGE RINGS
BEAM POSITION
COMPUTERIZED SIMULATION
STANFORD LINEAR COLLIDER
SYNCHROTRON RADIATION
ACCELERATOR FACILITIES
ACCELERATORS
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
MONITORS
RADIATIONS
SIMULATION
430400* - Particle Accelerators- Storage Rings